问题
单项选择题
对于双排喷水室，喷嘴应采用的布置方式是( )。
A．一顺一逆
B．两排顺喷
C．两排逆喷
D．对喷
答案
参考答案：D
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对于双排喷水室，喷嘴应采用的布置方式是( )。
A．一顺一逆
B．两排顺喷
C．两排逆喷
D．对喷
参考答案：D
| 阅读下面对话，从方框内的选项中选择恰当的句子完成此对话， | |
( )B: Good morning. Sit down, please. 1_______ ( )A: 2_______ I cough day and night. ( )B: You look pale (苍白). 3_______ A: Yes, but only a little. B: Let me take your temperature. I think you have got a cold. ( )A: 4_______ B: Don't worry. Nothing serious. Take this medicine three times a day. A: Thank you, doctor. ( )B: 5_______ |